Fluoroalkylsilanes of the general formula R'CH.sub.2 CH.sub.2 SiR.sub.n X.sub.3-n are prepared by reaction of an organohydrogensilane of the general formula R.sub.n SiHX.sub.3-n with a fluoroolefin of the general formula R'CH.dbd.CH.sub.2, where R is an alkyl or aryl group, R' is a perfluoroalkyl group, X is a halogen atom or an alkoxy group and n is 0, 1 or 2 in the presence of a binary catalyst composed of a platinum compound and stannous chloride under relatively mild conditions of temperature and pressure, at a very high yield.
通式为R'CH.sub.2 CH.sub.2 SiR.sub.n X.sub.3-n的氟烷基
硅烷可以在相对温和的温度和压力条件下,通过将通式为R.sub.n SiHX.sub.3-n的有机氢
硅烷与通式为R'CH.dbd.CH.sub.2的
氟烯烃在
铂化合物和
氯化亚锡的二元催化剂存在下反应制备而成,其中R为烷基或芳基,R'为
全氟烷基,X为卤素原子或烷氧基,n为0、1或2,产率很高。